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Finding the Fourth Proportional to 21,839.76, 32,759.64 and 8,692.25

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Solution

The fourth proportional to 21,839.76, 32,759.64 and 8,692.25 is: 13,038.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,839.76 : 32,759.64 = 8,692.25 : x
  2. Step 2: Convert to fraction form
    21,839.76/32,759.64 = 8,692.25/x
  3. Step 3: Cross multiply
    21,839.76x = 32,759.64 × 8,692.25
  4. Step 4: Simplify right side
    21,839.76x = 284,754,816.99
  5. Step 5: Solve for x
    x = 284,754,816.99/21,839.76
  6. Step 6: Final answer
    x = 13,038.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.